public void playStop() {
if (sequence != null) {
if (playState == PLAYING || playState == PAUSED) {
sequencer.stop();
sequencer.close();
playState = STOPPED;
}
}
}
public void playLoop() {
if (sequence != null) {
double playStartTime = (player.getSeekTime() / 100) * (playGetLength());
sequencer.setMicrosecondPosition((long) playStartTime);
if (playState != PLAYING) {
sequencer.start();
playState = PLAYING;
}
}
}
public void playResume() {
if (sequence != null) {
if (playState == PAUSED) {
sequencer.start();
playState = PLAYING;
}
}
}
public void playPause() {
if (sequence != null) {
if (playState == PLAYING) {
sequencer.stop();
playState = PAUSED;
}
}
}
public void close() {
System.out.println("midi closing");
if (synthesizer != null) {
synthesizer.close();
}
if (sequencer != null) {
sequencer.close();
}
sequencer = null;
synthesizer = null;
instruments = null;
channels = null;
}
public boolean play() {
try {
if (playState != STOPPED) playStop();
if (sequence == null) return false;
if (sequencer == null) return false;
sequencer.open();
sequencer.setSequence(sequence);
double playStartTime = (player.getSeekTime() / 100) * (playGetLength());
sequencer.setMicrosecondPosition((long) playStartTime);
sequencer.start();
playState = PLAYING;
return true;
} catch (Exception ex) {
ex.printStackTrace();
playState = STOPPED;
return false;
}
}
public boolean open() {
try {
if (synthesizer == null) {
if ((synthesizer = MidiSystem.getSynthesizer()) == null) {
System.out.println("getSynthesizer() failed!");
return false;
}
}
synthesizer.open();
sequencer = MidiSystem.getSequencer();
sequencer.addMetaEventListener(new ProcessMeta());
sequence = new Sequence(Sequence.PPQ, 10);
} catch (Exception ex) {
System.out.println("midi exception 1 ");
ex.printStackTrace();
return false;
}
System.out.println("midi opening");
Soundbank sb = synthesizer.getDefaultSoundbank();
if (sb != null) {
instruments = synthesizer.getDefaultSoundbank().getInstruments();
synthesizer.loadInstrument(instruments[0]);
}
MidiChannel midiChannels[] = synthesizer.getChannels();
numChannels = midiChannels.length;
channels = new ChannelData[midiChannels.length];
if (channels.length == 0) return false;
for (int i = 0; i < channels.length; i++) {
channels[i] = new ChannelData(midiChannels[i], i);
}
cc = channels[0];
return true;
}
public void playSetSeek(double seekTime) {
if (sequence != null) {
sequencer.setMicrosecondPosition((long) (seekTime * 1000.0));
}
}
public double playGetTime() {
if (sequence != null) {
return ((double) sequencer.getMicrosecondPosition()) / 1000.0;
}
return 0;
}
